JP3241008U - truck - Google Patents

Abstract

[PROBLEMS] To provide a truck equipped with a tilt protection device capable of preventing a front wheel from scratching a tilt lowered from a loading platform and not hindering the running of the truck.
A truck having a structure in which tilting lowered from a loading platform covers a front wheel under the loading platform, the truck is equipped with a tilting protection device 20 attached to the front and/or rear of the front wheel, the tilting protection device comprising a shock absorbing member. 7A and a cushioning member moving means 7B for moving the cushioning member, the cushioning member having a flexible member for absorbing the pressure toward the wheels generated in the lowered tilt, and the cushioning member moving means for lowering the tilt. Sometimes, the flexible member is positioned forward and/or rearward of the front wheels by moving from the inside of the vehicle width to the outside of the vehicle width, and when tilting is raised, the flexible member is moved inside the vehicle width.
[Selection drawing] Fig. 4

Description

This invention relates to a truck, and more particularly to a truck equipped with a tilting protection device, and more particularly, to a truck that intentionally or unintentionally lifts or unintentionally lifts or unloads a load on or off the bed with the tilting lowered from the bed. To provide a truck equipped with a tilt protection device for protecting a tilt so as not to damage the surface of the tilt such as a trace of a disk wheel of a front wheel when pressed by a forklift.

Conventionally, when the tilting of the front two-axle vehicle of a large truck is lowered from the loading platform and loading and unloading operations are performed using a forklift, when the forklift comes in contact with the tilting so as to press the tilting forcefully, it is attached to the wheels. There may be traces of disc wheels and bolts on the surface of the tilt.
So far, the following proposals have been made as machines, instruments, devices, and other items for preventing the formation of traces due to tilting.
The invention described in Japanese Patent Application Laid-Open No. 2002-200002 is "an annular disc made of an elastically deformable foam, and the thickness of the disc is set to be greater than the length of each bolt shaft of a plurality of bolts protruding from the disc surface that constitutes the wheel of the truck. Furthermore, through holes are formed in the annular disk at positions corresponding to the respective bolts and penetrate from the front surface of the disk surface to the back surface, and nuts or bolt caps to be screwed onto the bolts are inserted into the respective through holes. A tilting protector for a truck characterized in that the tilting is held by the wheel by tilting, and the tilting hits the surface of the annular disc when the tilting is rotated and lowered. Regarding this invention, in Patent Document 5, it is described as "a cushioning material made of foam that has a semi-doughnut shape or donut shape with holes for inserting bolts and nuts and prevents dents and scratches, and has a shape that raises the tilt according to the bolts and nuts. It is necessary to bend down because it will be worn with the foam, and the dirt attached to the foam in rainy weather and the scratches caused by the dirt on the tilt are not clearly shown." (See paragraph 0004 of Patent Document 5) . The invention described in Patent Document 1 prevents tilting from being damaged by attaching an annular disk having a specific shape or structure to the disk surface.
Patent Literature 2 describes "A protective device for tilting to be attached to a bolt nut that secures a wheel of a vehicle mounted with a tilting, which comprises a cylindrical body having an insertion opening for the bolt and nut formed on one end surface. A cap-shaped main body made of an elastically deformable material having a dome-shaped tip on the other end side is provided. The bolt and nut insertion portions are formed in three steps, the large insertion portion is a nut fitting portion having a hexagonal cross section for fitting the nut in the axial direction, and the small insertion portion protrudes from the nut. The tip portion of the bolt is a bolt fitting portion having a circular cross-section into which it is fitted in the axial direction, the insertion portion therein is an intermediate hollow portion forming a cavity around the tip portion of the bolt, and the tilt is the dome-shaped tip portion. A tilting protector fitted with a bolt and nut for fixing a wheel, characterized in that the dome-shaped tip part is elastically deformed in a flat direction when it comes into contact with. In short, the invention described in Patent Document 2 prevents the tilt from being damaged by covering the bolt protruding from the wheel with a cap-like main body. Regarding this "wheel fixing bolt nut mounting type tilt protector", in Patent Document 5, "it is said that it is made of cylindrical silicon that is attached to the bolt nut and prevents dent scratches, but it is provided with a through hole and deforms when it contacts the tilt. However, what happens to the through holes due to the dirt on the tilt, especially in the summer when the brake heat causes steam to come out when moisture adheres, what will happen? does not clearly state countermeasures." (see paragraph number 0004 of Patent Document 5).
In Patent Document 3, "In a vehicle equipped with a loading platform at the rear of the driver's cab, a protective plate is interposed between the loading platform with the side of the loading platform opened and the axle hub of the axle to prevent contact between the loading platform and the axle hub. When the side flaps of the cargo bed are closed, the protection plate is pulled up to the stored state under the floor of the cargo bed, and when the side flaps of the cargo bed are opened, the protective plate is interposed between the flap and the axle hub. A vehicle tilt protection device characterized by comprising an interlocking mechanism." is disclosed. In short, the invention described in Patent Document 3 is based on the technical idea of interposing the protective plate 25 between the axle hub 24 and the fan 22 to prevent the tilt from being damaged. Regarding this "tilting protection device", in Patent Document 5, it is stated that "a protective plate is suspended between the tilt and the axle hub of the axle from the place where it is stored under the cargo bed by interlocking with a wire as the tilt is opened and closed. , It is said that the protection plate suppresses deflection by its own weight, but when the protection plate is pressed against the axle hub by a forklift, the wire bends due to vertical movement due to the change in the weight of the loading platform, and when it is stored under the loading platform after use. What happens to stains during repeated use, and how to deal with scratches caused by stains attached to tilts is not specified.” ([0004] of Cited Document 2).
In Patent Document 4, "When the tilt of a large-sized truck with two front wheels and a semi-trailer is lowered, the position is stabilized so as to be sandwiched between the tilt and the tire bolts, nuts, etc., and the fixture that can be attached and detached. A shock absorber characterized by having a." is disclosed. In short, the invention described in Patent Document 4 is based on the technical idea of interposing a shock absorber between the bolts and nuts of the tire and the tilting to prevent the tilting from being damaged by the bolts and nuts. Regarding this shock absorber, in Patent Document 5, "An upper fixture that is used to cover the top surface of tilting with a U-shaped non-slip cushioning material and a lower fixing that is reversed by a ring-shaped rotating part on the top surface of tilting and fixed together It is supposed to be used as a material for adsorption and magnetic force, and the cushioning material is folded, and it is said that a material that is resistant to impact and a material that easily absorbs impact is used. No. As for the adsorption of the bottom fixture, what happens to the dirt on the tilt, and the magnetic fixture is unnatural when the tilt is lowered.Clarify how to deal with scratches that cause vertical movement of the loading platform. It has not been done.” (See [0004] of Patent Document 5).
In Patent Document 5, "a cushioning material of a planar multi-layer body that can be positioned in front of the tilting on the second axis of the front two-axle vehicle of a large truck, and has a gap between the tilting and the tilting. A new large-sized truck tilt protection shock absorber characterized by having a detachable fixture on the upper part of the material is disclosed. In the invention described in Patent Document 5, a "new large truck tilt protection shock absorber" is interposed between the tilt front surface on the second axis line of the front two-axle vehicle of the large truck and the bolt and nut of the wheel, thereby preventing the bolt , is based on the technical idea of preventing the tilt surface from being scratched by the nut. Further, Japanese Patent Application Laid-Open No. 2013-032808, which was introduced as a document introducing a device related to the tilt protection device in Patent Document 5, does not disclose an invention related to the tilt protection device.
The patent applicant and inventor in Patent Document 6 are the same as the utility model registration applicant and inventor of the present application. The invention according to Patent Document 6 is "a truck having a structure in which a tilt lowered from a cargo bed covers a front wheel under the cargo bed, and is attached to a support post positioned in front and/or rear of the front wheel and below the cargo bed. a tilting protection device mounted on the chassis, the tilting protection device being rotatable about an axis lying in a plane orthogonal to a horizontal width direction perpendicular to the central axis direction of the chassis; and a rotatable body having a flat surface and a cushioning member formed in a convex shape on the opposite side of the flat surface. The flat surface is set so as not to exceed the vehicle width of the truck, and when the flat surface is a vertical surface facing inward of the vehicle width, the A truck characterized in that a position of a tip portion of the cushioning member is set to be outside the vehicle width in the orthogonal direction.
In addition, Patent Documents 7 and 8 are cited as documents cited in the examination process of Patent Document 6.
The invention described in Patent Document 7 is based on the technical concept of interposing a protective plate 25 between the axle hub 24 and the fan 22 in order to prevent the surface of the fan 22 from being damaged.
The idea described in Patent Document 8 is that the side skirts provided below the cargo box 2 (cargo bed), that is, the side skirts 6 fixedly installed on the hanging walls prevent the side flaps 3 from being damaged. is intended to prevent

Utility Model Registration No. 3150180 JP 2018-135055 A JP 2006-044556 A JP 2009-1253 A JP 2019-182419 A Japanese Patent No. 7043154 JP-A-2006-44556 Published practical application No. 2-121484

The object of this invention is to prevent the front wheel from damaging the tilt of the truck, which has a structure in which the tilt lowered from the bed covers the front wheels positioned under the bed, and to install a tilt protection device. To provide a truck having a tilt protection device which does not hinder the running of the truck.
Furthermore, the object of this invention is to eliminate the need for a cushioning member or the like to be attached to the wheel disc of the front wheel under the loading platform, thus eliminating the need for the operation or work of attaching the cushioning member or the like to the wheel disc, thereby allowing the truck to travel. To provide a truck having a tilt protection device capable of preventing the tilt from being damaged by the front wheel without causing any trouble to the truck.
An object of the present invention is to provide a truck having a tilt protection device capable of preventing the tilt from being damaged without interposing the tilt protection device between the wheel disk and the tilt.
Another object of this invention is to provide a truck equipped with a tilt protection device having a simple mechanism different from the tilt protection device described in Patent Document 6.

The means of this invention for solving the above problems is
(1) A truck having a structure in which a tilt lowered from the bed covers the front wheels under the bed,
A tilt protection device mounted on the front and/or rear of the front wheel,
The tilt protection device comprises a cushioning member and cushioning member moving means for moving the cushioning member,
The cushioning member comprises a flexible member that absorbs the pressure directed toward the wheel that occurs in the lowered tilt,
The buffer member moving means moves the flexible member from the inside of the vehicle width to the outside of the vehicle width to position it in front and/or the rear of the front wheel when lowering the tilt, and when raising the tilt. , a truck characterized by moving the flexible member to the inside of the vehicle width,
(2) The buffer member moving means includes a support portion that supports the flexible member and is arranged to move the flexible member between the outside of the vehicle width and the inside of the vehicle width, and a moving mechanism that moves the support portion. The track according to (1) above, comprising
(3) The track according to (2), wherein the movement mechanism includes a rack provided on the support portion and a pinion meshing with the rack,
(4) The truck according to (2) above, wherein the moving mechanism is a jack for moving the support,
(5) The support part is a crawler belt that allows the flexible member to move clockwise or counterclockwise, and the movement mechanism includes a driving wheel and a driven wheel that wind the crawler belt. 2).

The wheels attached to both ends of the axle arranged near the driver's seat of the loading platform are formed of a tire and a disk wheel, and the disk wheel is attached to the tire so as to partially protrude from the side surface of the tire. Therefore, when the tilt is lowered carelessly, or when the tilt is pushed by an external force from a forklift or the like when the tilt is lowered from the loading platform, the disk wheel or the disc wheel may be damaged if the tilt protection device according to the present invention is not installed. There is a risk that the surface of the tilt will be scratched or traced by the bolts attached to the.
However, with the tilt protection device of this invention, the scratches and marks are prevented from being formed on the tilt surface. Moreover, when the truck is running, the tilting protection device is not installed beyond the vehicle width of the truck, so the truck equipped with the tilting protection device can travel safely.
The tilting protection device according to this invention does not need to be installed or installed at the bottom of the loading platform each time the tilting is lowered from the loading platform, and after the tilting protection device has been installed or installed at the bottom of the loading platform of a large truck. Since this tilting protection device can be attached or left installed all the time, when the tilting is lowered from the loading platform as in the conventional case, a buffer member is attached to the disk wheel of the wheel each time the work of lifting and lowering the cargo is performed. It is possible to eliminate complicated work such as removing this. When a truck equipped with this tilting protection device is running, the tilting protection device, especially the cushioning member in the tilting protection device, does not protrude in the width direction, so that the tilting protection device does not come into contact with something outside the track during truck travel. The truck can be driven safely without causing an accident.
In addition, since the tilting protection device is installed on the truck, there is no need to mount the tilting protection device on the truck each time the cargo is loaded or unloaded.
In addition, the tilting protection device of this invention moves the buffering member having the flexible member within the width of the vehicle by the buffering member moving means when the tilting is raised. In addition, when the tilting is lowered while the truck is stopped, the buffering member is moved to the outside of the vehicle width by the buffering member moving means, so that tilting can be performed by the disk wheel of the wheel. Doesn't leave scratches or marks.
This invention can also be applied to trucks called semi-trailers (or semi-trailers).

FIG. 1 is a side view showing the side of a truck equipped with a tilt protection device that is an example of this invention. FIG. 2 is a front view showing a state in which the tilt protection device, which is an example of this invention, is attached to the side guards. FIG. 3 is an explanatory view showing a plane of a low-floor four-axle vehicle equipped with a tilting protection device, which is an example of this invention. FIG. 4 is a principle explanatory diagram showing a tilting protection device that is another example of this invention. FIG. 5 is a principle explanatory view showing a tilting protection device as another example of this invention. FIG. 6 is a diagram for explaining the principle of a rotating portion of a jack in a tilt protection device, which is another example of this invention. FIG. 7 is a principle explanatory view showing a tilting protection device which is still another example of this invention.

The tilt protection device according to this invention is located in front of and/or behind the front wheels of a truck having a structure that covers the front wheels of a truck that has a tilt lowered from the bed and is hung below the bed. It is also attached to a post supported by the chassis.
Trucks typically include a driver's seat portion and a cargo bed located behind the driver's seat portion.
Large trucks include front two-axle type three-axle vehicles and low-floor four-axle vehicles.
The front 2-axle type 3-axle vehicle has wheels attached to both ends of one axle located under the driver's seat, and one wheel located in the front part under the loading platform, that is, near the driver's seat in the loading platform. Wheels mounted on both ends of an axle (single shaft) and wheels mounted on both ends of a single axle (single shaft) arranged below in the rear part of the loading platform. A truck with such a structure has three axles, and if you look at the truck from the side, it has two axles on the front side of the center of the truck. It is called "front 2-axle type 3-axle car". A wheel disc mounted on the side surface of the wheel arranged in the front part under the loading platform of this front two-axle type three-axle vehicle protrudes from the side surface of the wheel. Therefore, there is a possibility that this wheel disc will come into contact with the tilt when the tilt is lowered. Therefore, in order to prevent the wheel disk from being scratched, for example, the front two-axle type three-axle vehicle is an object vehicle equipped with the tilt protection device of this invention.
A low-floor 4-axle vehicle has wheels attached to both ends of an axle located below the driver's seat and a single axle located below the front part of the loading platform (this is sometimes referred to as a single axle). ) and wheels attached to both ends of a pair of axles (sometimes referred to as two axles) adjacent to each other below the rear part of the cargo bed. A truck having such a structure has four axles, so it is called a "low-floor four-axle truck."
The tilting protection device according to this invention has tilting mounted on the loading platform, and is arranged below the loading platform near the driver's seat of the front two-axle type 3-axle vehicle and low-floor 4-axle vehicle. It can be applied and installed on large trucks with wheels attached to both ends of the axle.

As shown in FIG. 1, the tilting protection device 7 can be provided, for example, in a large truck such as a low-floor four-axle vehicle 1. As shown in FIG.
This low-floor four-axle vehicle 1 has wheels 3 attached to both ends of one axle arranged below the driver's seat 2, and one axle (single axle) arranged below the front part of the loading platform 4. and wheels 6A and 6B mounted on both ends of a pair of adjacent axles (two axles) arranged below in the rear part of the cargo bed 4.
In this invention, the "front part of the loading platform" is a horizontal line perpendicular to the central axis of the chassis of the vehicle when the loading platform of the vehicle is projected onto a horizontal plane, and is a projected boundary line of the loading platform close to the driver's seat side (the front part of the loading platform). A line recognized as an outline) and a projected boundary line of the cargo bed, which is a horizontal line orthogonal to the central axis direction of the vehicle chassis and is far from the driver's seat, are formed. It means an area close to the cargo-bed projection boundary near the driver's seat side in the cargo-bed projection plane. The “rear portion of the cargo bed” means an area close to the cargo bed projection boundary far from the driver's seat side in the cargo bed projection plane.
The tilt protection device 7 is mounted on the low-floor four-axle vehicle 1 in combination with the side guards 8, as shown in FIG. FIG. 1 shows the right side of the low-floor four-axle vehicle 1, that is, the right side of the truck that is recognized as the right side when facing the driver's seat 2. It is also provided on the left side of the axle 1 .
In FIG. 1, 9a and 9b are tilts, and in this low-floor four-axle vehicle 1, two tilts 9a and 9b are arranged in a line on the side of the loading platform 4 (the side along the central axis direction of the chassis). is installed in In other words, the tilts 9a and 9b are arranged in a row on the right side and the left side of the loading platform 4 so that the ends of the tilts 9a and 9b are in contact with each other. 10 is a hinge for lowering the tilt 9a and tilt 9b from the loading platform.
As shown in FIG. 1 , the side guards 8 provided on the low-floor four-axle vehicle 1 are located below the loading platform 4 and are front wheels 5 of the loading platform 4 (sometimes referred to as front wheels 5 ). ) and a rear wheel 6A (sometimes referred to as a rear front wheel 6A) in the lower part of the loading platform 4. That is, the side guards 8 are arranged behind the front wheels 5 positioned below the loading platform 4 .
In this low-floor four-axle vehicle 1, the rear wheels are provided with wheels 6A and wheels 6B, and the wheels closer to the front wheels 5 are called rear front wheels 6A, and the wheels farther from the front wheels 5 are called rear front wheels 6A. The wheel on the other side is sometimes called the rear rear wheel 6B.

As shown in FIG. 2, the side guard 8 before the tilt protection device 7 is incorporated includes a vertical support member 8A that is coupled to a chassis (not shown) and arranged vertically below the side of the loading platform 4. and another vertical support member 8B connected to the chassis in the same manner as this vertical support member 8A and arranged parallel to this vertical support member 8A below the side of the loading platform 4. An upper horizontal beam member 8C bridged between the vertical support member 8A and the vertical support member 8B, a lower horizontal beam member 8D arranged in parallel below the upper horizontal beam member 8C, and the upper horizontal beam member 8C. and a central horizontal beam member 8E that spans the vertical support member 8A and the other vertical support member 8B so as to be positioned between the lower horizontal beam member 8D.
In this embodiment, the tilt protection device 7 is incorporated in the side guard 8, as shown in FIG. That is, the tilt protection device 7 is incorporated in the low-floor four-axle vehicle 1 using the side guards 8 .
The tilt device 7 is arranged such that the cushioning member 7A is positioned between the upper horizontal remaining member 8C and the central horizontal remaining member 8E. 1 and 2, the cushioning member moving means is not shown because it is behind the cushioning member 7A.
The fact that this buffer member 7A is arranged behind the wheel 5 (front wheel) is a matter that distinguishes it from the conventional tilt protection device. It is completely different from the conventional system or structure that prevents damage to the body.

As shown in FIG. 3, the cushioning member 7A extends from the central axis in the horizontal width direction orthogonal to the central axis of the chassis of the low-floor four-axle vehicle 1 in the width (vehicle width) of the low-floor four-axle vehicle 1. It is placed within a range of 124.5 (2490/2) cm.
The tilt protection device 7 has a shock absorbing member 7A that moves in parallel with the upper end (the highest position from the tire contact surface) and the lower end (the lowest position from the tire contact surface) of the wheel (front wheel) 5. It is preferably designed to be installed within the range of the virtual line and the bottom virtual line.
In FIG. 3, 11 indicates the central axis of the low-floor 4-axle vehicle 1 in the direction of the central axis of the chassis, and 3X indicates the axle supporting the wheels 3 arranged under the driver's seat. 5X indicates the center line of the lower part of the loading platform 4 and the centerline of the axle that supports the front wheels 5 mounted on the front part thereof, and 6AX indicates the lower part of the loading platform 4. 6BX is the center line of the axle supporting the rear front wheels 6A, 6BX is the center line of the axle supporting the rear rear wheels 6B in the lower portion of the loading platform 4, and W is the width of the vehicle. , is 2490 mm for this low-floor four-axle vehicle.

The mounting position of the tilt protection device 7 in this embodiment in a low-floor four-axle vehicle is important. The tilt protection device 7 according to this embodiment is mounted within the legally regulated maximum lateral width of the truck. That is, when the tilt protection device 7 is positioned so that the outer surface of the cushioning member 7A, that is, the end surface of the cushioning member 7A faces the outside of the side surface of the track, the end surface of the cushioning member 7A is legally restrained by the track. The truck is designed so that it is within the maximum lateral width, that is, the vehicle width, and that, when the cushioning member 7A performs its function, the cushioning member 7A is outside the legally regulated maximum lateral width, that is, the vehicle width. is installed in The vehicle width of a truck (which can also be recognized as the lateral width) is determined according to Article 84, Paragraph 2, Item 2 of the Road Transportation Law Vehicle Safety Standard Details [December 25, 2020]. , The most lateral parts of a motor vehicle (rotating tires, disc wheels and accompanying rotating parts installed in motor vehicles other than large special motor vehicles or small special motor vehicles, and direction indicators provided on both sides of the motor vehicle) (excluding those provided in the central part according to Article 137, paragraph 3, item 4; the same applies to Article 100, paragraph 4, item 10)) projected on the reference plane, the vehicle center line and distance in a direction parallel to an orthogonal straight line”. The width (that is, lateral width) of this vehicle is defined in Article 2, Paragraph 1 of the "Safety Standards for Road Transport Vehicles [2019.11.15]". 2.5m, . . . Each car has a "car inspection certificate" issued for each car, and the "width" (that is, lateral width) of the car is specified in the car inspection certificate. The tilt protection device according to this invention is installed so as not to exceed the width described in the vehicle inspection certificate, that is, the vehicle width. In this embodiment, the vehicle width of the low-floor four-axle vehicle 1 is, for example, 2.49 m, so the tilt protection device is installed so that the shock absorbing member 7A does not exceed this vehicle width.

As shown in FIG. 1, in the low-floor four-axle vehicle 1 in which the tilts 9a and 9b are raised instead of being lowered under the loading platform 4, the right side, that is, the driver's seat of the low-floor four-axle vehicle 1 As shown in FIG. 3, the tilting protection device 7 provided on the right side of the low floor four-axle vehicle 1 has a cushioning member 7A that extends from the chassis of the low-floor four-axle vehicle 1 at the width (vehicle width) of the low-floor four-axle vehicle 1. It is within the range of 124.5 (2490/2) cm from the center axis in the horizontal width direction perpendicular to the center axis, that is, within the range of the width of the vehicle. It is arranged so as to be 124.5 cm from the central axis of the four-axle vehicle 1 in the horizontal plane. In addition, the tilt protection device 7 is formed by parallelly moving the upper end (highest position from the tire contact surface) and the lower end (lowest position from the tire contact surface) of the cushioning member 7A and the wheel (front wheel) 5. It is installed so as to be installed within the range between the virtual line and the bottom virtual line.

An embodiment of this invention will be further described.
For example, as shown in FIG. 4, the tilt protection device 20 is composed of a cushioning member 7A and cushioning member moving means 7B.
The cushioning member 7A in the tilt protection device 20 shown in FIG. 4 is formed with a predetermined shape and volume on one surface of a base, for example, a plate-like body 7C. Various shapes can be adopted for the shape of the buffer member 7A as long as it functions to absorb the pressure applied to the tilts 9a and 9b and prevent the tilts 9a and 9b from contacting the wheels of the front wheels 5. For example, a cube, a rectangular parallelepiped, a cylindrical body with a circular cross-section divided vertically, and a triangular prism with a triangular cross-section convex toward tilting can be used. The volume of the cushioning member is such that when the tilting is in contact with the cushioning member 7A and the tilting receives a large pressing force from, for example, a forklift, the pressing force is absorbed and the cushioning member itself is deformed. As a result, the volume is determined to be sufficient to prevent the tilt from coming into contact with the wheels mounted on the wheels of a large truck.
The cushioning member 7A can be made of an elastically deformable material that can absorb and disperse the pressure and impact applied to the cushioning member 7A. For example, hard rubber, resin foam, silicone rubber, hard resin, It can be formed of a soft resin or the like.
Further, as shown in FIG. 4, the cushioning member moving means 7B implements forward and backward movement of the cushioning member 7A as follows. That is, the cushioning member moving means 7B can move the cushioning member 7A forward and backward in a direction parallel to the width direction 12 in the vehicle width AB, and can be positioned outside the vehicle width AB along the width direction 12. In addition, the buffer member 7A is moved backward in a direction parallel to the width direction 12 of the vehicle width AB so that the buffer member 7A does not protrude outside the vehicle width AB. It is configured so that the buffer member 7A can be arranged.

The cushioning member moving means 7B in the tilt protection device 20 shown in FIG. At one end of the rack 14, a plate-like body 7C that supports the cushioning member 7A is arranged. When a driving means (not shown), such as a motor, coupled to the rotation axis of the pinion 15 is driven, the pinion 15 rotates, and the rack 14 meshing with the pinion 15 moves in parallel, and as a result, the buffer member 7G is moved. It is positioned outside the vehicle width AB and positioned within the range of the vehicle width AB. This rack 14 and pinion 15 form a moving mechanism in this invention. A switch for turning on/off the driving means may be arranged at an appropriate position on the driver's seat 2 or may be arranged at an appropriate position near the tilt protection device 20. FIG.

Next, the action of the tilt protection device 7, which is one embodiment of this invention, will be described.
As an initial state, it is assumed that the loading platform 4 of the low-floor four-axle vehicle 1 is not loaded with cargo, and the swings 9a and 9b are raised on the sides of the loading platform 4. FIG. It is also assumed that a forklift (not shown) is parked at a position away from the low-floor four-axle vehicle 1 . In addition, in the tilt protection device 20 installed in the low-floor four-axle vehicle 1, as an initial state, the front end or the outer end of the cushioning member 7A is directed outward with respect to the width of the vehicle. do. The legal vehicle width of the low-floor four-axle vehicle 1, that is, the vehicle width indicated on the vehicle inspection certificate is 2490 mm. Then, from the front end (outer end) of the cushioning member 7A in the tilt protection device 7 equipped on the left side of the low-floor four-axle vehicle 1 facing the driver's seat, the tilting movement equipped on the right side of the low-floor four-axle vehicle 1 The distance to the tip (outer end) of the cushioning member 7A in the protective device 7 is 2490 mm.

A forklift is used to load cargo onto the loading platform 4 of the low-floor four-axle vehicle 1 from the right side of the loading platform 4 facing the driver's seat, as follows.
First, by driving the cushioning member moving means 7B in the tilt protection device 7 on the right side of the low-floor four-axle vehicle 1, the cushioning member 7A is advanced, and arranged so that the cushioning member 7A protrudes outward with respect to the vehicle width. do.
Next, by rotating the tilts 9a and 9b around the hinge 10, the tilts 9a and 9b are lowered from the end of the loading platform 4 to the state of being raised at the end of the loading platform 4.例文帳に追加When the tilts 9a and 9b are lowered, the outer sides of the tilts 9a and 9b may come into contact with the buffer member 7A, but the buffer member 7A does not dent or damage the outer sides of the tilts 9a and 9b.
With the tilts 9a and 9b lowered, the operation of loading the cargo loaded on the forks by a forklift or the like onto the loading platform 4 is performed, for example, as follows.
It is assumed that a pallet loaded with cargo on its upper surface is installed at a location away from the low-floor four-axle vehicle 1. - 特許庁Then, the forks of the forklift are inserted into the insertion holes of the pallet. The forklift is moved near the side surface of the loading platform 4 of the low-floor four-axle vehicle 1, for example, the right side surface, while the pallet with the forks inserted in the insertion holes is slightly lifted from the ground. With the forklift parked near the loading platform 4 of the low-floor four-axle vehicle 1, the forks are raised along the mast of the forklift. After confirming that the lower surface of the pallet supported by the forks is higher than the upper surface of the loading platform 4 of the low-floor four-axle vehicle 1, move the forklift further toward the side of the low-floor four-axle vehicle 1. The forklift is moved forward and stopped immediately before the swings 9a and 9b lowered from the loading platform 4, and the pallet lifted by the forks is positioned above the upper surface of the loading platform 4.例文帳に追加Next, while the forklift is parked, the forks are lowered so that the pallet is placed on the upper surface of the loading platform 4 and the pallet is placed on the upper surface of the loading platform 4 .
The baggage on the pallet placed on the upper surface of the loading platform 4 is moved and arranged at a proper place on the loading platform 4 by hand or by using a winch or the like.
Next, the forks are raised to lift the pallet from which the cargo has been removed from the upper surface of the loading platform 4 . Reverse the forklift and move it to where other items are being collected. The forks of the forklift may be lowered during this movement.
In the above operation, when the pallet on which the cargo is loaded is held at a position higher than the height of the loading platform 4 and the pallet held by the fork moves from outside the loading platform 4 to the upper surface of the loading platform 4, The forklift may move too far from the side of the loading platform 4 toward the loading platform 4 and the mast of the forklift may collide with the tilts 9a and 9b of the loading platform 4. - 特許庁Even if force is applied to the tilts 9a and 9b from the side of the low-floor four-axle vehicle 1 as the forklift moves forward, the shock absorbers 7A of the tilt protection device 7 are in contact with the tilts 9a and 9b. , tilts 9a and 9b are not pressed against the convex portion of the disk wheel of the wheel or the head of the bolt. Therefore, the surfaces of the tilts 9a and 9b are prevented from being scratched by a disk wheel or the like.
When a predetermined load or cargo is loaded on the loading platform 4 of the low-floor four-axle vehicle 1, tilts 9a and 9b that have been lowered on the side surfaces of the low-floor four-axle vehicle 1 are raised.
After that, by driving the damping member moving means 7B in the tilt protection device 7, specifically, a drive means (not shown) coupled to the rotation axis of the pinion 15. For example, a motor and rotary motion transmission means combination with speed reducing means, etc.) to rotate the pinion 15, the rotation of the pinion 15 causes the rack 14 to move backward, and when the outer end of the buffer member 7A is positioned inside the vehicle width, the pinion 15 stops rotating. As a result, since the outer end of the cushioning member 7A is positioned inside the vehicle width, the truck 1 is free from obstacles caused by the cushioning member 7A, and safe truck traveling is realized.

An embodiment of this invention has been described above, but this invention is not limited to the above-described embodiment, and there are various modifications within the scope of this invention.
As a modification, for example, the cushioning member moving means may be configured such that the locus of movement for moving the cushioning member 7A from the inside of the vehicle width to the outside of the vehicle width draws a curve.
As already explained with reference to FIGS. 1 and 2, the tilting protection device according to this invention can be combined with the side guards 8 and installed in a large-sized truck such as the low-floor four-axle vehicle 1 . That is, there is a sufficient space for arranging the buffer member 7A of the tilt protection device 7 between two adjacent horizontal beam members forming the side guards 8, such as the upper horizontal beam member 8C and the central horizontal beam member 8E. In some cases, the buffer member 7A is arranged between the upper and lower sides of the two horizontal beam members 8C and 8E, or between the adjacent upper horizontal beam member 8C and the central horizontal beam member 8E that form the side guards 8. When there is not enough space for this, the central cross member 8E can be removed to secure a space in which the cushioning member 7A can be placed, and the tilt protection device 7, especially the cushioning member 7A, can be installed in that space. can be done.
The tilting protection device 7 can be retrofitted to a large-sized truck after shipment, and can also be mounted as a component on a new large-sized truck.
The tilting protection device 7 according to the above embodiment is arranged behind the front wheels 5 under the loading platform 4 of the low-floor four-axle vehicle 1. may be arranged in front of the front wheel 5, or may be arranged in two places, in front of and behind the front wheel 5. Needless to say, the tilt protection device 7 may normally be installed on both the right and left sides of the driver's seat of a large truck, and depending on the situation, it may be installed on either the right side or the left side. It may be equipped only with
In the tilting protection device according to this invention, the shock absorbing member is arranged within the vehicle width of the truck when the truck equipped with the tilting protection device is traveling, and the shock absorbing member is arranged when loading and unloading cargo on the truck bed in the parked truck. is not limited to the embodiment described above, as long as the position of the buffer member can be changed so as to be positioned outside the vehicle width beyond the range of the vehicle width of the truck.

As another specific example of the tilt protection device according to this invention, a tilt protection device 17B shown in FIG. This jack 17C is a pantograph type jack.
As shown in FIGS. 5 and 6, the jack 17C has a pair of lower arms 31, 31 whose one ends are pivotally connected to the seat plate 30, and a pair of lower arms 31, 31 whose one ends are pivotally connected to the push-up plate 32. upper arms 33, 33, a stopper 35 fitted to the connecting metal 34 on the operation side, and a support hole 34a of the connecting metal 34, and screwed into a female threaded hole 35a of the connecting metal 35 on the operating side. The threaded rod 36 is inserted into the bearing hole 34a with the stopper 35 fitted therein, so that the threaded rod 36 is formed inside the link mechanism. By engaging the engaging pawl of the stopper with the engaging peripheral step portion 37, it is assembled so as to be rotatable and axially immovable.
The threaded rod 36 is connected to the rotary shaft of a driving means, such as a motor 39, for rotating the threaded rod 36. As shown in FIG. The motor 39 can be driven by, for example, an on/off switch provided in the driver's seat of the truck, or an on/off switch provided at an appropriate position on the side of the truck.
The seat plate 30 is attached to a member directly attached to the chassis of the truck or to a fixed member further attached at an appropriate position to the member directly attached to the chassis. In short, the seat plate 30 is fixed at a suitable fixed position as long as the pantograph type jack can be fixedly installed.
The cushioning member 7A installed on the push-up plate 32, which is the supporting portion in this device, can be made of the same material as the cushioning member 7A employed in the tilt protection device 20 shown in FIG. Further, the shape of the buffer member 7A viewed from the right side of the track 1 can be appropriately determined.
Further, as shown in FIG. 5, this cushioning member moving means is designed to move the cushioning member 7A forward and backward as follows. That is, the cushioning member moving means can move the cushioning member 7A forward and backward in a direction parallel to the width direction 12 in the vehicle width AB, and can be positioned further outside the vehicle width AB along the width direction 12. In addition, the cushioning member 7A is moved backward in a direction parallel to the width direction 12 of the vehicle width AB so that the cushioning member 7A does not protrude outside the vehicle width AB. It is configured so that the member 7A can be arranged.
In addition, as long as the buffer member moving means can move the buffer member forward and backward, it is not limited to the pantograph type jack, but may be a mechanical jack such as a screw jack, a liquid-operated jack such as a hydraulic jack, or an air jack. It can also be formed using an air operated jack.

FIG. 7 shows yet another variation of this invention.
A tilt protection device 40 shown in FIG. 7 has a cushioning member 7A and cushioning member moving means 41 capable of moving the cushioning member 7A from the inside of the vehicle width to the outside of the vehicle width. In FIG. 7, the vehicle width means the width from point A to point B. As shown in FIG.
The cushioning member 7A is made of a flexible member such as hard rubber, resin foam, silicone rubber, hard resin, soft resin, or the like. Various shapes can be adopted for the shape of the cushioning member 7A as long as it can receive the tilt pressure. Examples of the shape of the flexible member include a rectangular parallelepiped, a cube, a triangular pyramid, a cylindrical body, and a cylindrical body. Moreover, the number of buffer members 7A is not particularly limited. There are seven buffer members 7A shown in FIG.
The cushioning member moving means 41 includes a support portion 42 on which the cushioning member 7A is arranged, and a moving mechanism 45 having driving wheels 43 and driven wheels 44 for driving the supporting portion 42 .
The support portion 42 is a crawler belt extending between the driving wheels 43 and the driven wheels 44 . Crawlers, track belts, caterpillars and the like can be used as the crawler belt. The track shown in FIG. 7 is formed of a rubber belt. The driving wheels 43 are rotatable or rotatable by a driving source such as a motor (not shown) via a power transmission member (not shown).
In this buffer member moving means 41, the driving wheels 43 and the driven wheels 44 are arranged such that the rotational axes of the driving wheels 43 and the driven wheels 44 are both vertical and parallel to each other.
Further, the outer surface of the belt as the crawler belt, which is the support portion 42, wound around the driving wheels 43 and the driven wheels 44 is within the range of the vehicle width AB (in other words, inside) and is arranged on the surface of the crawler belt. Drive wheels 43 and driven wheels 44 are arranged such that the maximum length of the cushioning member 7A from the crawler belt (support portion 42) is located outside the vehicle width AB.
In FIG. 7, reference numeral 45 denotes a frame on which the drive wheel 43 and the driven wheel 44 are arranged, and 46 is a support plate provided on the frame for suspending the rotation shafts of the drive wheel 43 and the driven wheel 44. is.
The tilt protection device 40 shown in FIG. 7 operates as follows.
When the truck is running, the drive wheels 43 are driven to move the cushioning member 7A installed on the support portion 42, which is a crawler belt, specifically a belt, to the inside of the vehicle width AB. That is, the cushioning member 7A is kept in a state of not protruding outside the vehicle width AB. Therefore, the truck having the tilt protection device 40 can drive safely because the buffer member 7A does not protrude outside the vehicle width AB when the truck is running.
When loading and unloading cargo onto and from the loading platform 4 of this parked truck, the drive wheels 43 are driven to rotate the support portion 42, thereby moving the buffer member 7A within the range of the vehicle width AB to the vehicle width AB. move to the outside of Next, the tilts 9a and 9b are lowered. When the tilts 9a and 9b are simply lowered, the front surfaces of the tilts 9a and 9b are either in contact with the cushioning member 7A or face each other with a gap therebetween.
Next, when a forklift is used to unload cargo from the bed of the truck or to load cargo onto the bed of the truck, pressure is applied to the tilting motion, and the tilting motion may move toward the inside of the vehicle width. In this case, while the cushioning member 7A contacts the surface of the tilt, the surface of the tilt is not pressed against the convex portion of the disk wheel of the wheel or the head of the bolt. Therefore, the surface of tilting is not damaged.
The tilting protection device 40 shown in FIG. 7 is arranged so that the rotation axes of the drive wheels 43 and the driven wheels 44 are perpendicular to a plane including the width direction of the truck and the direction of the central axis of the chassis. Although the drive wheel 43 and the driven wheel 44 are arranged, as a modification, the rotation shafts of the drive wheel 43 and the driven wheel 44 are arranged with respect to a plane including the width direction of the truck and the central axis direction of the chassis. The driving wheel 43 and the driven wheel 44 may be arranged so that they are parallel to each other.
In addition, in the mode of connecting the cushioning member 7A to the support portion 42, the cushioning member 7A on which the support portion 42 is installed separates and separates from the support portion 42 when the cushioning member 7A moves on the curved surfaces of the driving wheels 43 and the driven wheels 44. As long as the cushioning member 7A is coupled to the support member 42 following the movement of the support member 42, various coupling methods can be employed.
For example, when the cushioning member 7A has a square bottom surface, the bottom surface of the cushioning member 7A and the surface of the support member 42, such as a crawler belt or belt, can be coupled with a single connecting member such as an adhesive or a screw.
Although this invention has been described in detail above, the tilt protection device according to this invention is not limited to the above-described embodiments, and various modifications exist within the scope of this invention.

This idea is designed to prevent the wheels and wheels from being damaged even if an inadvertent force is applied to the tilting motion when the tilting motion is lowered to load or unload the load on the loading platform of a large truck. It can be used as a rocking prevention device that can prevent scarring.

1 Low-floor 4-axle vehicle 2 Driver's seat 3 Wheel 3X Center line of axle 4 Cargo bed 5 Wheel (front wheel)
5X axle centerline 6A wheel (rear front wheel)
6B wheel (rear rear wheel)
6AX Axle centerline 6BX Axle centerline 7 Tilt protection device 7A Cushioning member 7B Forward/backward driving means 7C Jack 8 Side guard 8A Vertical support member 8B Vertical support member 8C Upper horizontal beam member 8D Lower horizontal beam member 8E Central horizontal remaining member 9a, 9b Tilt 10 Hinge 11 Chassis longitudinal centerline 12 Track width direction 13 Axial direction 14 Rack 15 Pinion 17B Tilt protection device 17C Jack 20 Tilt protection device 30 Seat plate 31 Lower arm 32 Push-up plate 33 Upper arm 34 Connecting metal 34a Bearing hole 35 Stopper 35a Female screw hole 36 Threaded rod 37 Engagement peripheral step 38 Locking claw 40 Tilt protection device 41 Buffer member moving means 42 Support part 43 Drive wheel 44 Driven wheel 45 Frame 46 Support plate AB Vehicle Width A One end of vehicle width B Other end of vehicle width

Claims (5)

A truck having a structure in which a tilt lowered from the bed covers the front wheels under the bed,
A tilt protection device mounted on the front and/or rear of the front wheel,
The tilt protection device comprises a cushioning member and cushioning member moving means for moving the cushioning member,
The cushioning member comprises a flexible member that absorbs the pressure directed toward the wheel that occurs in the lowered tilt,
The buffer member moving means moves the flexible member from the inside of the vehicle width to the outside of the vehicle width when lowering the tilt, and moves the flexible member inward of the vehicle width when raising the tilt. Feature track. The cushioning member moving means includes a support portion that supports the flexible member and is arranged to move the flexible member between the outside of the vehicle width and the inside of the vehicle width, and a moving mechanism that moves the support portion. 2. A track according to claim 1, comprising: 3. The track according to claim 2, wherein said moving mechanism comprises a rack provided on said support and a pinion meshing with said rack. 3. The truck of claim 2, wherein said moving mechanism is a jack for moving said support. 3. The track of claim 2, wherein the support is a track that allows the flexible member to move clockwise or counterclockwise, and the movement mechanism includes a drive wheel and a driven wheel that encircle the track.

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